Improvement in soldering-clamps



F. C. & C. E. SMITH.

SOLDERING CLAMPS.

Patentedlulyll, 1876.

Witnesses I NAPEYERS. FKOTD-QTNOGYRAPHER WASHINGTON. D C.

FERDINAND 0. SMITH AND CHARLES E. SMITH, OF PORTLAND, OREGON.

IMPROVEMENT lN SOLDERlNG-CLAMPS- Specification forming part of LettersPatent No. 179,823, dated July 11, 1876; application filed May 16, 1876.

To all whom it may concern Be it known that we, FERDINAND 0. SMITH andCHARLES E. SMITH, both of Portland, State of Oregon, have invented aMachine for Tinners use; and we do hereby declare the followingdescription and accompanying drawings are sufficient to enable anyperson skilled in the art or science to which it most nearly appertainsto make and use our said invention without further invention orexperiment.

Our invention relates to a machine for tinners use, the object of whichis, first, to pro vide a machine for conveniently soldering cans; and itconsists in certain combinations and details of construction, ashereinafter are more specifically described and claimed.

Referring to the accompanying drawings,

Figure l is a perspective view of our machine.

A is a table or work-bench, upon which I secure the casting which formsthe body of the machine. This casting consists ofa base, B, which issecured to the top of the table, and an upright standard, 0, whichextends upward from the casting near the front edge of the table. Ahorizontal cylinder, D, is detach-ably secured to the standard, so as toproject out beyond the front of the table.

This cylinder D is the form around which the piece of sheet metal isbent, in order to give it a cylindrical form, and it is secured to theupright- O by means of a detachable fastening, so that it can be removedwhen desired, and thus permit of different sizes be ing attached,according to the diameter of cylinder it is desired to make.

In some cases, however, where the machine is intended for makingcylinders of a specific and uniform size, it can form a permanent partof the casting.

One or more projecting pins or stops, 6, are secured to the cylinder atthe proper distance from its front end, to gage the length and positionof; the piece of sheet metal while it is being bent and soldered.

In connection with this former or cylinder we use a clamp, F, which canbe raised by means of a treadle, Gr, while the sheet of metal is beingbent around the cylinder, and which is forced downward by a spring, h,so as to clamp the overlapped edges of the sheet metal when the treadleis released, and thus hold the edges in place while the workman soldersthem together.

The arm I, which operates the clamping blade or hit I is hinged to therear end of the casting,'and its upper end is bent forward at rightangles, so as to pass through a slot, '11, in the upper end of thestandard (J. The spiral spring h is placed in the slot iabove the arm orbar I, so as to press it downward. The clamping bit or blade 1*, whichis as long as the cylinder D, is fastened to the end of this bardirectly above the cylinder D, so that its edge will be pressed by thespring along the whole length of the metal cylinder.

For convenience We secure thisbit or blade at an angle as represented,so that it will be out of the way of'the soldering-iron as it is passedalong the same.

The treadle maybe connected in various ways with the arm I for raisingit, but we have represented an independent lever, K, which passes alongunder the bar, and is pivoted at its middle to the standard 0. The rearend of this lever is connected with the trcadle by a connecting-rod, l,which passes down through the table,'so that when the treadle isdepressed the forward end of the lever will be raised, and will alsolift the arm I.

This machine will be found to be of great value in the manufacture oftin cans, where it is desirable to have them all of a uniform size,although it will be equally useful in manufacturing all kinds ofsheet-metal cylinders which require to be soldered along the joinededge.

The clamp can also be used for holding the edges of square and othershaped work.

This former and clamp greatly assist the workman, so that he can do thework with great celerity.

Having thus described our invention, what we claim, and desire to secureby Letters Patent, is-

The base 13, with its upright slotted stand- :ml 0, in combination withthe detachable In Witness whereof we have hereunto set former D andhinged arm I, with its clampour hands.

ing blade 01' bit F, operated by the treadle G, FERDINAND 0. SMITH.connecting-rod l, and lever K, and the spiral CHARLES E. SMITH. springh, all combined and arranged to 0p Witnesses:

erate substantially as and for the purposes STEPHEN L. POLLOGK,

described. WiLLIAM COLLIER.

